Solve the Problem $x , - 2 \pi \leq x \leq 2 \pi$

Multiple Choice

Solve the problem.
-For what numbers $x , - 2 \pi \leq x \leq 2 \pi$ , does the graph of $y = \tan x$ have vertical asymptotes.?

A) $- 2 \pi , - \pi , 0 , \pi , 2 \pi$
B) $- \frac { 3 \pi } { 9 } , - \frac { \pi } { 9 } , \frac { \pi } { 9 } , \frac { 3 \pi } { 2 }$
C) $- 2 , - 1,0,1,2$
D) none